There are thousands of hot springs in the famous Yellowstone in US. These hot springs rippling water mist curl up.And have hundreds of geysers jet with boiling water.The most beautiful one in those hot springis is the Morning Glory Pool.
Morning Glory is a kind of hot springs Pool, it's temperature is much lower than the geysers, so it can reproduce the rich algae.
When the temperature of Morning Glory Pool hot spring water reach 85 ℃, algae is white in spring; 82 ℃ for red meat. Buff when 74 ℃; 68 ℃ to yellowish green.
